I'm not a big YouTube person, but this was on the WGN Morning News earlier this week and I thought it was pretty cool:
Straight No Chaser sings The 12 Days of ChristmasWatch for the non-Christian holiday that pops up as well as the '80s homage (the part featured on the news and the part that grabbed me, but then again I love that song).
Besides...guys in suits...that can sing...see previous entry. ;)